To change the temperature in your home, your heating and air-conditioning system sucks in air from a room, pulls it over coils to heat or chill it, then blows the tempered air through ducts to the other rooms in your home. The air filter is stationed at the point where air is pulled into the system. It traps air-born particles that get sucked in with the air and keeps them from blocking the blower and clogging up the coils.

Clogged coils can’t heat or cool the air passing over them, and they may damage the system. So, the air filter helps your heating and cooling system do its job, keeps it running efficiently and protects it so it will last longer.

So, the air filter helps your heating and cooling system do its job, keeps it running efficiently and protects it so it will last longer.

Filter Ratings (MERV)

MERV stands for Minimum Efficiency Reporting Value. MERV ratings indicate the size of particles that a filter can remove from the air passing through it. MERVs range from 1 to 16, with a higher number indicating a higher cleaning efficiency because it can filter smaller particles out of the air. The cheap, 1-inch (2.54-centimeter) thick, disposable filters made of jumbled fiberglass or natural fiber strands typically have a MERV rating of 1 but can go up to 4. Pleated filters made of nonwoven, disposable fabric have smaller pores, and the pleats increase the surface area of the filter so it can hold more particles than a flat surface can. These filters have MERV ratings of 3 and higher depending on the density of the fabric and the number of pleats [source: INDA]. Some are charged with static electricity to attract and hold air-born allergens.

Did you Know?

AC allowed for exponential advances in medicine and human life expectancy. Air-conditioned hospitals helped defeat malaria, decrease infant mortality, inhibit bacteria, and advance developments in surgery.

Let it Flow

If your filter looks clean after it’s been in place for the recommended time, here are some things you should check:

  1. Does the filter fit properly into the holder? If the filter is loose or too small for the space, the air can circulate around it instead of going through it. Measure the filter space and purchase a filter that fits snugly.
  2. Is the filter installed upside down? There is a correct air-flow direction for most air filters. Look for arrows on the filter frame, and install the filter so that the arrows point toward the fan.
  3. Is the filter you’re using right for the job you want it to do? If you’re using a low-end filter, it’s not going to catch much dust. Upgrade to a filter with a higher MERV rating to increase the air cleaning efficiency.
  4. Check your rate of air exchange, if your system is functioning properly, it should run for about 15 minutes per cycle, with a cycle rate of not more than three in an hour. If it runs shorter cycles, it isn’t creating the desired rate of air exchange. Call a professional and get your system checked. Your home environment and how often you run the heat or air can also affect how quickly your air filter gets dirty. If your home is well sealed, you have no pets, no dust-prone furnishings like carpet and fabric-covered furniture, and you dust and vacuum every day, your air filters will have fewer air-born particles to collect. Also, the system only filters the air when it’s running. If you install a new filter, but don’t turn on the heat or air conditioning until a month or two later, the filter should still be relatively clean since the system hasn’t been forcing air through it.

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Kaiser AC Expands Our Oxnard, CA Sheetmetal Fabrication Capabilities

Kaiser AC is pleased to announce a valuable new addition to our Oxnard, CA sheet metal fabrication department. In our continuing efforts to produce the finest quality products with the best possible value, the sheet metal department at Kaiser Air Conditioning has recently added a new, state-of-the-art automatic folder from TENNSMITH.

This new machine provides our skilled fabricators with increased workflow efficiency while producing architectural sheet metal, copper, stainless steel, aluminum, galvanized, and bonderized metal products. With advanced computer control and bending speeds of up to 90 degrees per second, we are able to offer increased levels of production efficiency while fabricating even the tightest of required specifications or tolerances.

Sheet metal products as: flashings, gutters, metal roof panels, metal roof trim, linear roof flashings, metal wall trim, and custom radius linear metal are available in addition to custom HVAC ducting and assemblies.

For more information on Kaiser Air Conditioning’s fabrication services, visit our sheet metal fabrication overviewor contact a representative today at 805-988-1800. Our team is standing by to offer the best quality products with competitive pricing for your residential, commercial, or wholesale sheet metal fabrication needs.

Lennox Residential Named a Winner in ACHR News’ 2013 Dealer Design Awards


Lennox Residential was recognized for excellence in product design in the 10th annual Dealer Design Awards Program sponsored by The Air Conditioning Heating & Refrigeration News magazine. An independent panel of contractors judged 122 entries and iComfort Wi-Fi® Touchscreen Thermostat was chosen as the Gold award winner in the Residential Controls category. The ACHR News is the leading trade magazine in the heating, ventilating, air conditioning and refrigeration industries.